Which expression converts [('x', 1), ('y', 2)] into {'x': 1, 'y': 2}?
[('x', 1), ('y', 2)]
{'x': 1, 'y': 2}
str([('x', 1), ('y', 2)])
list([('x', 1), ('y', 2)])
dict([('x', 1), ('y', 2)])
int([('x', 1), ('y', 2)])